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it教程FG302-中间件安装与配置

1. 中间件概述

中间件是位于操作系统和应用程序之间的软件层,提供了应用程序运行所需的服务和功能。更多学习教程www.fgedu.net.cn

1.1 中间件的类型

  • Web服务器:如Tomcat、Nginx、Apache等
  • 应用服务器:如WebLogic、WebSphere、JBoss等
  • 消息中间件:如Kafka、RabbitMQ、ActiveMQ等
  • 缓存中间件:如Redis、Memcached等
  • 数据库中间件:如MySQL Proxy、MyCat等

1.2 中间件的作用

  • 提供应用程序运行环境
  • 管理应用程序的生命周期
  • 提供负载均衡和高可用
  • 简化应用程序开发
  • 提高系统的可扩展性和可靠性

2. Tomcat安装与配置

Tomcat是一个开源的Web应用服务器,用于部署和运行Java Web应用程序。学习交流加群风哥微信: itpux-com

2.1 安装Java

# 安装OpenJDK
# yum install -y java-11-openjdk java-11-openjdk-devel

# 验证Java安装
# java -version
openjdk version “11.0.11” 2021-04-20
OpenJDK Runtime Environment 18.9 (build 11.0.11+9)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.11+9, mixed mode)

# 设置JAVA_HOME环境变量
# vi /etc/profile
export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-11.0.11.0.9-0.el7_9.x86_64
export PATH=$JAVA_HOME/bin:$PATH

# 使环境变量生效
# source /etc/profile

2.2 安装Tomcat

# 下载Tomcat
# wget https://downloads.apache.org/tomcat/tomcat-9/v9.0.50/bin/apache-tomcat-9.0.50.tar.gz

# 解压Tomcat
# tar -zxvf apache-tomcat-9.0.50.tar.gz

# 移动到安装目录
# mv apache-tomcat-9.0.50 /usr/local/tomcat9

# 创建Tomcat用户
# useradd -m -s /bin/bash tomcat

# 设置Tomcat目录权限
# chown -R tomcat:tomcat /usr/local/tomcat9

2.3 配置Tomcat

# 配置Tomcat服务
# vi /etc/systemd/system/tomcat.service
[Unit]
Description=Apache Tomcat Web Application Container
After=network.target

[Service]
Type=forking

Environment=JAVA_HOME=/usr/lib/jvm/java-11-openjdk-11.0.11.0.9-0.el7_9.x86_64
Environment=CATALINA_PID=/usr/local/tomcat9/temp/tomcat.pid
Environment=CATALINA_HOME=/usr/local/tomcat9
Environment=CATALINA_BASE=/usr/local/tomcat9
Environment=’CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC’
Environment=’JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom’

ExecStart=/usr/local/tomcat9/bin/startup.sh
ExecStop=/usr/local/tomcat9/bin/shutdown.sh

User=tomcat
Group=tomcat
UMask=0007
RestartSec=10
Restart=always

[Install]
WantedBy=multi-user.target

# 启动Tomcat服务
# systemctl daemon-reload
# systemctl start tomcat
# systemctl enable tomcat

# 查看Tomcat状态
# systemctl status tomcat
● tomcat.service – Apache Tomcat Web Application Container
Loaded: loaded (/etc/systemd/system/tomcat.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2026-03-30 17:00:00 CST; 1min ago
Process: 1234 ExecStart=/usr/local/tomcat9/bin/startup.sh (code=exited, status=0/SUCCESS)
Main PID: 1235 (java)
CGroup: /system.slice/tomcat.service
└─1235 /usr/lib/jvm/java-11-openjdk-11.0.11.0.9-0.el7_9.x86_64/bin/java -Djava.util.logging.config.file=/usr/local/tomcat9/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom -Xms512M -Xmx1024M -server -XX:+UseParallelGC -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Dignore.endorsed.dirs= -classpath /usr/local/tomcat9/bin/bootstrap.jar:/usr/local/tomcat9/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat9 -Dcatalina.home=/usr/local/tomcat9 -Djava.io.tmpdir=/usr/local/tomcat9/temp org.apache.catalina.startup.Bootstrap start

# 验证Tomcat访问
# curl http://fgedudb:8080




Apache Tomcat/9.0.50

2.4 配置Tomcat虚拟主机

# 编辑server.xml文件
# vi /usr/local/tomcat9/conf/server.xml

# 在标签内添加虚拟主机配置

fgedu.net.cn


# 重启Tomcat
# systemctl restart tomcat

3. WebLogic安装与配置

WebLogic是Oracle公司的一款商业应用服务器,用于部署和运行Java企业级应用程序。学习交流加群风哥QQ113257174

3.1 安装Java

# 下载并安装Oracle JDK
# wget https://download.oracle.com/java/11/latest/jdk-11_linux-x64_bin.rpm
# rpm -ivh jdk-11_linux-x64_bin.rpm

# 验证Java安装
# java -version
java version “11.0.11” 2021-04-20 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.11+9-LTS-194)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.11+9-LTS-194, mixed mode)

# 设置JAVA_HOME环境变量
# vi /etc/profile
export JAVA_HOME=/usr/java/jdk-11.0.11
export PATH=$JAVA_HOME/bin:$PATH

# 使环境变量生效
# source /etc/profile

3.2 安装WebLogic

# 下载WebLogic安装包
# wget https://download.oracle.com/otn/nt/middleware/12c/122140/fmw_12.2.1.4.0_wls_lite_generic.jar

# 创建WebLogic用户
# useradd -m -s /bin/bash weblogic
# passwd weblogic

# 创建安装目录
# mkdir -p /opt/oracle/middleware
# chown -R weblogic:weblogic /opt/oracle

# 切换到weblogic用户
# su – weblogic

# 运行安装程序
$ java -jar fmw_12.2.1.4.0_wls_lite_generic.jar

# 按照安装向导进行安装
# 选择”Typical”安装类型
# 安装路径:/opt/oracle/middleware
# 完成安装

3.3 创建WebLogic域

# 切换到weblogic用户
# su – weblogic

# 运行域创建向导
$ /opt/oracle/middleware/oracle_common/common/bin/config.sh

# 按照向导进行配置
# 选择”Create a new domain”
# 域路径:/opt/oracle/middleware/user_projects/domains/base_domain
# 配置管理员fgedu和密码
# 完成域创建

# 启动WebLogic服务器
$ /opt/oracle/middleware/user_projects/domains/base_domain/bin/startWebLogic.sh

# 验证WebLogic访问
# curl http://fgedudb:7001/console



Oracle WebLogic Server Administration Console

4. WebSphere安装与配置

WebSphere是IBM公司的一款商业应用服务器,用于部署和运行Java企业级应用程序。更多学习教程公众号风哥教程itpux_com

4.1 安装WebSphere

# 下载WebSphere安装包
# wget https://www.ibm.com/software/passportadvantage/pao_customer/sd/display_pn.html?pn=CB4E2ML

# 创建WebSphere用户
# useradd -m -s /bin/bash websphere
# passwd websphere

# 创建安装目录
# mkdir -p /opt/IBM/WebSphere
# chown -R websphere:websphere /opt/IBM

# 切换到websphere用户
# su – websphere

# 运行安装程序
$ ./install

# 按照安装向导进行安装
# 选择”IBM WebSphere Application Server Network Deployment”
# 安装路径:/opt/IBM/WebSphere/AppServer
# 完成安装

4.2 配置WebSphere

# 启动WebSphere配置工具
$ /opt/IBM/WebSphere/AppServer/bin/wasprofile.sh -create -profileName AppSrv01 -templatePath /opt/IBM/WebSphere/AppServer/profileTemplates/default

# 启动WebSphere服务器
$ /opt/IBM/WebSphere/AppServer/profiles/AppSrv01/bin/startServer.sh server1

# 查看服务器状态
$ /opt/IBM/WebSphere/AppServer/profiles/AppSrv01/bin/serverStatus.sh server1

# 验证WebSphere访问
# curl http://fgedudb:9080



IBM WebSphere Application Server

5. Nginx安装与配置

Nginx是一个高性能的Web服务器和反向代理服务器,用于部署静态网站和作为应用服务器的前端代理。author:www.itpux.com

5.1 安装Nginx

# 安装Nginx
# yum install -y nginx

# 启动Nginx服务
# systemctl start nginx
# systemctl enable nginx

# 查看Nginx状态
# systemctl status nginx
● nginx.service – The nginx HTTP and reverse proxy server
Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2026-03-30 17:30:00 CST; 1min ago
Process: 1234 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS)
Process: 1233 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
Process: 1232 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)
Main PID: 1235 (nginx)
CGroup: /system.slice/nginx.service
├─1235 nginx: master process /usr/sbin/nginx
└─1236 nginx: worker process

# 验证Nginx访问
# curl http://fgedudb



Welcome to nginx!

5.2 配置Nginx

# 编辑Nginx配置文件
# vi /etc/nginx/nginx.conf

# 修改配置
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

log_format main ‘$remote_addr – $remote_user [$time_local] “$request” ‘
‘$status $body_bytes_sent “$http_referer” ‘
‘”$http_user_agent” “$http_x_forwarded_for”‘;

access_log /var/log/nginx/access.log main;

sendfile on;
#tcp_nopush on;

keepalive_timeout 65;

#gzip on;

include /etc/nginx/conf.d/*.conf;
}

# 创建虚拟主机配置
# vi /etc/nginx/conf.d/example.conf
server {
listen 80;
server_name www.fgedu.net.cn fgedu.net.cn;

location / {
root /usr/share/nginx/html;
index index.html index.htm;
}

error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}

# 测试Nginx配置
# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

# 重启Nginx
# systemctl restart nginx

5.3 配置Nginx反向代理

# 编辑虚拟主机配置
# vi /etc/nginx/conf.d/proxy.conf
server {
listen 80;
server_name api.fgedu.net.cn;

location / {
proxy_pass http://fgedudb:8080;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}

# 测试Nginx配置
# nginx -t

# 重启Nginx
# systemctl restart nginx

6. Redis安装与配置

Redis是一个开源的内存数据库,用于缓存、会话管理和消息队列等场景。

6.1 安装Redis

# 安装Redis
# yum install -y redis

# 启动Redis服务
# systemctl start redis
# systemctl enable redis

# 查看Redis状态
# systemctl status redis
● redis.service – Redis persistent key-value database
Loaded: loaded (/usr/lib/systemd/system/redis.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2026-03-30 17:45:00 CST; 1min ago
Main PID: 1234 (redis-server)
CGroup: /system.slice/redis.service
└─1234 /usr/bin/redis-server 127.0.0.1:6379

# 验证Redis访问
# redis-cli ping
PONG

6.2 配置Redis

# 编辑Redis配置文件
# vi /etc/redis.conf

# 修改配置
bind 0.0.0.0
protected-mode no
port 6379
dir /var/lib/redis
maxmemory 512mb
maxmemory-policy allkeys-lru

# 重启Redis
# systemctl restart redis

# 测试Redis设置
# redis-cli set test “Hello Redis”
OK
# redis-cli get test
“Hello Redis”

7. Kafka安装与配置

Kafka是一个分布式的消息队列系统,用于处理高吞吐量的实时数据流。

7.1 安装Kafka

# 安装Java
# yum install -y java-11-openjdk java-11-openjdk-devel

# 下载Kafka
# wget https://downloads.apache.org/kafka/2.8.0/kafka_2.13-2.8.0.tgz

# 解压Kafka
# tar -zxvf kafka_2.13-2.8.0.tgz

# 移动到安装目录
# mv kafka_2.13-2.8.0 /usr/local/kafka

# 创建Kafka用户
# useradd -m -s /bin/bash kafka

# 设置Kafka目录权限
# chown -R kafka:kafka /usr/local/kafka

7.2 配置Kafka

# 启动Zookeeper
# su – kafka
$ /usr/local/kafka/bin/zookeeper-server-start.sh -daemon /usr/local/kafka/config/zookeeper.properties

# 启动Kafka服务器
$ /usr/local/kafka/bin/kafka-server-start.sh -daemon /usr/local/kafka/config/server.properties

# 创建主题
$ /usr/local/kafka/bin/kafka-topics.sh –create –topic test-topic –bootstrap-server fgedudb:9092 –partitions 1 –replication-factor 1

# 查看主题
$ /usr/local/kafka/bin/kafka-topics.sh –list –bootstrap-server fgedudb:9092
test-topic

# 发送消息
$ /usr/local/kafka/bin/kafka-console-producer.sh –topic test-topic –bootstrap-server fgedudb:9092
>Hello Kafka
>Test message

# 消费消息
$ /usr/local/kafka/bin/kafka-console-consumer.sh –topic test-topic –from-beginning –bootstrap-server fgedudb:9092
Hello Kafka
Test message

8. 中间件最佳实践

中间件的安装和配置需要遵循最佳实践,以确保系统的稳定性和性能。

生产环境风哥建议:

  • 选择合适的中间件版本,考虑稳定性和安全性
  • 合理配置中间件参数,根据系统负载进行调优
  • 实施中间件监控,及时发现和解决问题
  • 建立中间件备份策略,防止数据丢失
  • 定期更新中间件,修复安全漏洞
  • 实施访问控制,保护中间件安全
  • 文档化中间件配置,便于维护和管理
  • 制定中间件故障应急预案,提高系统可靠性

8.1 性能优化

  1. 内存配置:根据应用需求合理配置内存大小
  2. 线程池配置:根据系统负载调整线程池大小
  3. 连接池配置:优化数据库和网络连接池
  4. 缓存配置:合理使用缓存,提高系统响应速度
  5. 日志配置:优化日志级别和存储方式

8.2 高可用配置

  1. 集群部署:部署多个中间件实例,实现负载均衡
  2. 故障转移:配置自动故障转移机制
  3. 数据复制:实现数据的多副本存储
  4. 监控告警:配置监控系统,及时发现故障

8.3 安全配置

  1. 访问控制:配置用户认证和授权
  2. 网络安全:限制网络访问,使用防火墙
  3. 加密传输:使用SSL/TLS加密传输数据
  4. 漏洞修复:定期更新中间件,修复安全漏洞
风哥风哥提示:中间件是系统架构的重要组成部分,选择合适的中间件并正确配置可以提高系统的性能和可靠性。

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